Nihon Reoroji Gakkaishi
Online ISSN : 2186-4586
Print ISSN : 0387-1533
ISSN-L : 0387-1533
NOTE
Stringiness Characterization of Emulsion Products by Using a Stress Control-Type Rheometer
Keiji Kasahara
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2013 Volume 41 Issue 4 Pages 231-233

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Abstract

Rheological characteristics of stringy cosmetic emulsions that contain different ingredients and have different firmness was determined by a stress-controlled rheometer. Although the measurement of steady flow showed the first normal stress difference [N1] increase and viscosity [η] decrease with increase in shearing speed, there was no correlation between both parameters and the sensory evaluation score which indicates the degree of the stringiness. But it was found that new parameter ([N1]/[η]) has a strong correlation with the sensory evaluation score(r > 90) within a range of 300 - 1000S-1.

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© 2013 The Society of Rheology, Japan
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